On Sun, 28 Sep 2003, Brad Knowles wrote: > Weird. Now I get a lockup (and spinning beachball) just by > letting the program run for a few minutes. I did a ktrace on the > process, and the output from kdump seems to indicate that the program > is stuck in a tight loop somehow: > > 2746 KisMAC CALL gettimeofday(0xf002f9d0,0) > 2746 KisMAC RET gettimeofday 1064714734/0x3f7641ee > 2746 KisMAC CALL gettimeofday(0xf002f9d0,0) [we get the idea] > Is there anything else I can do to help debug this process? I > can attach to the process with gdb, but I don't really know what I'm > doing with it or how to use it to get any useful information. I > don't even know how to get it to generate a coredump. after you're attached, say "where" and see what the back trace it gives you says. some versions of gdb support the generate-core-file command, which you might try.